/* W3G8 Payment Gateway - Stylesheet */

:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --secondary: #0ea5e9;
    --accent: #10b981;
    --dark: #0f172a;
    --dark-light: #1e293b;
    --gray: #64748b;
    --gray-light: #94a3b8;
    --light: #f1f5f9;
    --white: #ffffff;
    --gradient: linear-gradient(135deg, #6366f1 0%, #0ea5e9 100%);
    --gradient-dark: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    color: var(--dark);
    line-height: 1.6;
    background: var(--white);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Typography */
h1, h2, h3, h4, h5 {
    font-weight: 700;
    line-height: 1.2;
}

h1 { font-size: 3.5rem; }
h2 { font-size: 2.5rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }

.gradient-text {
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 8px;
    text-decoration: none;
    transition: all 0.2s ease;
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: var(--gradient);
    color: var(--white);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(99, 102, 241, 0.3);
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--gray-light);
    color: var(--dark);
}

.btn-outline:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.btn-lg {
    padding: 16px 32px;
    font-size: 1.1rem;
}

.btn-block {
    width: 100%;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    padding: 16px 0;
    border-bottom: 1px solid var(--light);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo {
    font-size: 1.75rem;
    font-weight: 800;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.tagline {
    font-size: 0.875rem;
    color: var(--gray);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
    list-style: none;
}

.nav-links a {
    text-decoration: none;
    color: var(--dark);
    font-weight: 500;
    transition: color 0.2s;
}

.nav-links a:hover {
    color: var(--primary);
}

/* Hero Section */
.hero {
    padding: 160px 0 100px;
    background: linear-gradient(180deg, var(--light) 0%, var(--white) 100%);
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.badge {
    display: inline-block;
    padding: 8px 16px;
    background: rgba(99, 102, 241, 0.1);
    color: var(--primary);
    font-size: 0.875rem;
    font-weight: 600;
    border-radius: 20px;
    margin-bottom: 24px;
}

.hero h1 {
    margin-bottom: 24px;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--gray);
    margin-bottom: 32px;
    max-width: 540px;
}

.hero-cta {
    display: flex;
    gap: 16px;
    margin-bottom: 48px;
}

.hero-stats {
    display: flex;
    gap: 48px;
}

.stat {
    display: flex;
    flex-direction: column;
}

.stat-value {
    font-size: 2rem;
    font-weight: 800;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--gray);
}

/* Architecture Diagram */
.hero-visual {
    display: flex;
    justify-content: center;
}

.architecture-diagram {
    background: var(--white);
    border-radius: 16px;
    padding: 32px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.1);
}

.arch-layer {
    display: flex;
    justify-content: center;
    gap: 16px;
}

.arch-box {
    background: var(--light);
    padding: 16px 24px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.875rem;
}

.arch-box.highlight {
    background: var(--gradient);
    color: var(--white);
    padding: 24px 48px;
}

.arch-box.small {
    padding: 12px 16px;
    font-size: 0.75rem;
}

.arch-connector {
    height: 40px;
    width: 2px;
    background: var(--gray-light);
    margin: 8px auto;
}

/* Sections */
.section {
    padding: 100px 0;
}

.section-dark {
    background: var(--dark);
    color: var(--white);
}

.section-gradient {
    background: var(--gradient);
    color: var(--white);
}

.section-header {
    text-align: center;
    max-width: 640px;
    margin: 0 auto 60px;
}

.section-header p {
    color: var(--gray);
    font-size: 1.125rem;
    margin-top: 16px;
}

.section-dark .section-header p {
    color: var(--gray-light);
}

/* Platform Grid */
.platform-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.platform-card {
    background: var(--dark-light);
    border-radius: 16px;
    padding: 32px;
    transition: transform 0.2s;
}

.platform-card:hover {
    transform: translateY(-4px);
}

.card-icon {
    width: 48px;
    height: 48px;
    background: var(--gradient);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.card-icon svg {
    width: 24px;
    height: 24px;
    color: var(--white);
}

.platform-card h3 {
    margin-bottom: 12px;
}

.platform-card p {
    color: var(--gray-light);
    font-size: 0.9375rem;
}

/* Components Showcase */
.component-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    margin-bottom: 80px;
}

.component-row.reverse {
    direction: rtl;
}

.component-row.reverse > * {
    direction: ltr;
}

.component-badge {
    display: inline-block;
    padding: 6px 14px;
    background: var(--gradient);
    color: var(--white);
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-radius: 4px;
    margin-bottom: 16px;
}

.component-info h3 {
    font-size: 1.75rem;
    margin-bottom: 16px;
}

.component-info p {
    color: var(--gray);
    margin-bottom: 24px;
}

.feature-list {
    list-style: none;
}

.feature-list li {
    padding: 8px 0;
    padding-left: 28px;
    position: relative;
    color: var(--gray);
}

.feature-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--accent);
    font-weight: 700;
}

.code-block {
    background: var(--dark);
    border-radius: 12px;
    padding: 24px;
    overflow-x: auto;
}

.code-block pre {
    margin: 0;
}

.code-block code {
    color: var(--light);
    font-family: 'Monaco', 'Menlo', monospace;
    font-size: 0.875rem;
    line-height: 1.6;
}

/* Features Grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.feature-card {
    background: var(--dark-light);
    border-radius: 12px;
    padding: 28px;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.feature-card h4 {
    margin-bottom: 12px;
    color: var(--white);
}

.feature-card p {
    color: var(--gray-light);
    font-size: 0.9375rem;
}

/* Payment Methods */
.payment-categories {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
}

.payment-category h3 {
    margin-bottom: 20px;
    color: var(--dark);
}

.payment-methods {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.payment-method {
    background: var(--light);
    padding: 12px 20px;
    border-radius: 8px;
    font-weight: 500;
    font-size: 0.9375rem;
}

/* Deployment */
.deployment-content {
    text-align: center;
}

.deployment-content h2 {
    margin-bottom: 16px;
}

.deployment-content > p {
    opacity: 0.9;
    margin-bottom: 48px;
}

.deployment-options {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.deploy-option {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    padding: 32px;
}

.deploy-option h4 {
    margin-bottom: 12px;
}

.deploy-option p {
    opacity: 0.9;
    font-size: 0.9375rem;
}

/* Contact Section */
.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
}

.contact-info h2 {
    margin-bottom: 16px;
}

.contact-info > p {
    color: var(--gray);
    margin-bottom: 32px;
}

.contact-details {
    list-style: none;
}

.contact-details li {
    margin-bottom: 16px;
}

.contact-details strong {
    display: block;
    font-size: 0.875rem;
    color: var(--gray);
    margin-bottom: 4px;
}

.contact-details a {
    color: var(--primary);
    text-decoration: none;
    font-weight: 500;
}

.contact-form {
    background: var(--light);
    border-radius: 16px;
    padding: 40px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 14px 16px;
    border: 2px solid transparent;
    border-radius: 8px;
    font-size: 1rem;
    font-family: inherit;
    background: var(--white);
    transition: border-color 0.2s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
}

/* Footer */
.footer {
    background: var(--dark);
    color: var(--white);
    padding: 80px 0 40px;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 80px;
    margin-bottom: 60px;
}

.footer-brand .logo {
    font-size: 2rem;
    margin-bottom: 16px;
}

.footer-brand p {
    color: var(--gray-light);
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
}

.footer-column h5 {
    margin-bottom: 20px;
    font-weight: 600;
}

.footer-column ul {
    list-style: none;
}

.footer-column li {
    margin-bottom: 12px;
}

.footer-column a {
    color: var(--gray-light);
    text-decoration: none;
    transition: color 0.2s;
}

.footer-column a:hover {
    color: var(--white);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 40px;
    border-top: 1px solid var(--dark-light);
}

.footer-bottom p {
    color: var(--gray);
}

.certifications {
    display: flex;
    gap: 24px;
}

.certifications span {
    font-size: 0.875rem;
    color: var(--gray-light);
    padding: 6px 12px;
    border: 1px solid var(--dark-light);
    border-radius: 4px;
}

/* Architecture Section */
.architecture-section {
    background: var(--dark);
    color: var(--white);
}

.bus-diagram {
    background: var(--dark-light);
    border-radius: 16px;
    padding: 40px;
    margin: 40px 0;
}

.bus-visual {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.bus-layer {
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}

.bus-node {
    background: rgba(99, 102, 241, 0.2);
    border: 2px solid var(--primary);
    padding: 16px 24px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.875rem;
}

.bus-core {
    background: var(--gradient);
    padding: 20px 60px;
    border-radius: 8px;
    font-weight: 700;
    text-align: center;
}

.rules-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-top: 40px;
}

.rule-card {
    background: var(--dark-light);
    border-radius: 12px;
    padding: 28px;
    border-left: 4px solid var(--primary);
}

.rule-card h4 {
    margin-bottom: 12px;
    color: var(--white);
}

.rule-card p {
    color: var(--gray-light);
    font-size: 0.9375rem;
}

/* Responsive */
@media (max-width: 1024px) {
    .platform-grid,
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .hero .container,
    .component-row,
    .contact-content,
    .footer-content {
        grid-template-columns: 1fr;
    }

    .component-row.reverse {
        direction: ltr;
    }

    h1 { font-size: 2.5rem; }
    h2 { font-size: 2rem; }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

    .hero-stats {
        flex-wrap: wrap;
        gap: 24px;
    }

    .platform-grid,
    .features-grid,
    .payment-categories,
    .deployment-options,
    .footer-links {
        grid-template-columns: 1fr;
    }

    .rules-grid {
        grid-template-columns: 1fr;
    }
}